Make a glass jar to put small trinkets in!
Carve a design of your preference on a clear mason jar with a lid. There are plenty of designs to select from on the day of your tour.
The mason jar is 77 mm diameter x 131 mm tall.

Make a colorful beer glass with small floral designs. Overlay color glass is a special type of glass used to make traditional Japanese cups.
You can select from five colors (red, purple, green, azure and light blue)
Beer glass size is 56 mm diameter x 104 mm tall.
There will be pre-cut designs for you to use.

[JR] 5-minute walk from Ichigaya Station on the Sobu Line/10-minute walk from Yotsuya Station
[Subway] 5-minute walk from Ichigaya Station on the Toei Shinjuku Line, and Tokyo Metro Nanboku Line and Yurakucho Line